What should i get my grandpa for fathers day?

i really want to get him something good and memorable this year but the thing is, hes super-duper loaded and can buy pretty much anything he wants so its almost impossible for me to find a great gift. he loves coffee so i was thinking about buying him the most expensive coffee in the world but then i learned it was made from rodent ****..lol so definatly not that. but anybody with some suggestion please help...thanks!!